_______________________________________________Hi,
On my ceph osd servers I have lot of "out of memory messages".
My servers are configured with :
- 32 G of memory
- 11 HDD (3,5 T each) (+ 2 HDD for the system)
And the error messages are :
[101292.017968] Out of memory: Kill process 2597 (ceph-osd) score 102 or sacrifice child
[101292.018836] Killed process 2597 (ceph-osd) total-vm:5048008kB, anon-rss:3002648kB, file-rss:0kB, shmem-rss:0kB
Top result :
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
75469 ceph 20 0 4982324 3,988g 0 S 0,7 12,7 3:45.05 ceph-osd
75499 ceph 20 0 5095896 3,710g 0 S 0,3 11,8 4:08.93 ceph-osd
65848 ceph 20 0 5713748 3,329g 0 S 0,0 10,6 68:49.12 ceph-osd
67237 ceph 20 0 5580720 3,155g 0 S 0,0 10,1 57:15.99 ceph-osd
71113 ceph 20 0 5557608 3,101g 0 S 0,3 9,9 36:47.69 ceph-osd
74745 ceph 20 0 5117212 3,062g 0 S 3,7 9,8 8:13.56 ceph-osd
72494 ceph 20 0 5621156 2,828g 0 S 0,3 9,0 27:19.97 ceph-osd
70954 ceph 20 0 5765016 2,571g 0 S 0,3 8,2 40:02.00 ceph-osd
74817 ceph 20 0 5139328 2,510g 0 S 0,3 8,0 7:24.33 ceph-osd
76523 ceph 20 0 3324820 2,422g 0 S 0,3 7,7 0:55.54 ceph-osd
Is there a way to limit or reduce the memory usage of each osd deamon ?
Thank you,
Regards,
Sylvain PORTIER.
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